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ladybird/Userland/Services/WindowServer/WindowFrame.cpp
Andreas Kling 432ab47053 WindowServer: Allow partial repaints in window frame & menubars 
Before this change, invalidating any rect in a WindowFrame would cause
the entire window (including frame & drop shadow) to get invalidated,
leading to copious amounts of overdraw when mousing over menubars,
titlebars, and window buttons.

We now simply allow the partial frame invalidations through to the
window's dirty rects collection and the compositor takes care of it.
2021-07-08 01:17:06 +02:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ClientConnection.h"
#include <AK/Badge.h>
#include <LibGfx/Font.h>
#include <LibGfx/Painter.h>
#include <LibGfx/StylePainter.h>
#include <LibGfx/WindowTheme.h>
#include <WindowServer/Button.h>
#include <WindowServer/Compositor.h>
#include <WindowServer/Event.h>
#include <WindowServer/MultiScaleBitmaps.h>
#include <WindowServer/Screen.h>
#include <WindowServer/Window.h>
#include <WindowServer/WindowFrame.h>
#include <WindowServer/WindowManager.h>
namespace WindowServer {
static Gfx::WindowTheme::WindowType to_theme_window_type(WindowType type)
{
switch (type) {
case WindowType::Normal:
return Gfx::WindowTheme::WindowType::Normal;
case WindowType::ToolWindow:
return Gfx::WindowTheme::WindowType::ToolWindow;
case WindowType::Notification:
return Gfx::WindowTheme::WindowType::Notification;
default:
return Gfx::WindowTheme::WindowType::Other;
}
}
static RefPtr<MultiScaleBitmaps> s_minimize_icon;
static RefPtr<MultiScaleBitmaps> s_maximize_icon;
static RefPtr<MultiScaleBitmaps> s_restore_icon;
static RefPtr<MultiScaleBitmaps> s_close_icon;
static RefPtr<MultiScaleBitmaps> s_close_modified_icon;
static RefPtr<MultiScaleBitmaps> s_active_window_shadow;
static RefPtr<MultiScaleBitmaps> s_inactive_window_shadow;
static RefPtr<MultiScaleBitmaps> s_menu_shadow;
static RefPtr<MultiScaleBitmaps> s_taskbar_shadow;
static RefPtr<MultiScaleBitmaps> s_tooltip_shadow;
static String s_last_active_window_shadow_path;
static String s_last_inactive_window_shadow_path;
static String s_last_menu_shadow_path;
static String s_last_taskbar_shadow_path;
static String s_last_tooltip_shadow_path;
static Gfx::IntRect frame_rect_for_window(Window& window, const Gfx::IntRect& rect)
{
if (window.is_frameless())
return rect;
int menu_row_count = (window.menubar() && window.should_show_menubar()) ? 1 : 0;
return Gfx::WindowTheme::current().frame_rect_for_window(to_theme_window_type(window.type()), rect, WindowManager::the().palette(), menu_row_count);
}
WindowFrame::WindowFrame(Window& window)
: m_window(window)
{
// Because Window constructs a WindowFrame during its construction, we need
// to be careful and defer doing initialization that assumes a fully
// constructed Window. It is fully constructed when Window notifies us with
// a call to WindowFrame::window_was_constructed.
}
void WindowFrame::window_was_constructed(Badge<Window>)
{
{
auto button = make<Button>(*this, [this](auto&) {
m_window.handle_window_menu_action(WindowMenuAction::Close);
});
m_close_button = button.ptr();
m_buttons.append(move(button));
}
if (m_window.is_resizable()) {
auto button = make<Button>(*this, [this](auto&) {
m_window.handle_window_menu_action(WindowMenuAction::MaximizeOrRestore);
});
button->on_middle_click = [&](auto&) {
m_window.set_vertically_maximized();
};
m_maximize_button = button.ptr();
m_buttons.append(move(button));
}
if (m_window.is_minimizable()) {
auto button = make<Button>(*this, [this](auto&) {
m_window.handle_window_menu_action(WindowMenuAction::MinimizeOrUnminimize);
});
m_minimize_button = button.ptr();
m_buttons.append(move(button));
}
set_button_icons();
m_has_alpha_channel = Gfx::WindowTheme::current().frame_uses_alpha(window_state_for_theme(), WindowManager::the().palette());
}
WindowFrame::~WindowFrame()
{
}
void WindowFrame::set_button_icons()
{
set_dirty();
if (m_window.is_frameless())
return;
m_close_button->set_icon(m_window.is_modified() ? *s_close_modified_icon : *s_close_icon);
if (m_window.is_minimizable())
m_minimize_button->set_icon(s_minimize_icon);
if (m_window.is_resizable())
m_maximize_button->set_icon(m_window.is_maximized() ? *s_restore_icon : *s_maximize_icon);
}
void WindowFrame::reload_config()
{
String icons_path = WindowManager::the().palette().title_button_icons_path();
auto reload_icon = [&](RefPtr<MultiScaleBitmaps>& icon, StringView const& path, StringView const& default_path) {
StringBuilder full_path;
full_path.append(icons_path);
full_path.append(path);
if (icon)
icon->load(full_path.to_string(), default_path);
else
icon = MultiScaleBitmaps::create(full_path.to_string(), default_path);
};
reload_icon(s_minimize_icon, "window-minimize.png", "/res/icons/16x16/downward-triangle.png");
reload_icon(s_maximize_icon, "window-maximize.png", "/res/icons/16x16/upward-triangle.png");
reload_icon(s_restore_icon, "window-restore.png", "/res/icons/16x16/window-restore.png");
reload_icon(s_close_icon, "window-close.png", "/res/icons/16x16/window-close.png");
reload_icon(s_close_modified_icon, "window-close-modified.png", "/res/icons/16x16/window-close-modified.png");
auto load_shadow = [](const String& path, String& last_path, RefPtr<MultiScaleBitmaps>& shadow_bitmap) {
if (path.is_empty()) {
last_path = String::empty();
shadow_bitmap = nullptr;
} else if (!shadow_bitmap || last_path != path) {
if (shadow_bitmap)
shadow_bitmap->load(path);
else
shadow_bitmap = MultiScaleBitmaps::create(path);
if (shadow_bitmap)
last_path = path;
else
last_path = String::empty();
}
};
load_shadow(WindowManager::the().palette().active_window_shadow_path(), s_last_active_window_shadow_path, s_active_window_shadow);
load_shadow(WindowManager::the().palette().inactive_window_shadow_path(), s_last_inactive_window_shadow_path, s_inactive_window_shadow);
load_shadow(WindowManager::the().palette().menu_shadow_path(), s_last_menu_shadow_path, s_menu_shadow);
load_shadow(WindowManager::the().palette().taskbar_shadow_path(), s_last_taskbar_shadow_path, s_taskbar_shadow);
load_shadow(WindowManager::the().palette().tooltip_shadow_path(), s_last_tooltip_shadow_path, s_tooltip_shadow);
}
MultiScaleBitmaps* WindowFrame::shadow_bitmap() const
{
if (m_window.is_frameless() && !m_window.has_forced_shadow())
return nullptr;
switch (m_window.type()) {
case WindowType::Desktop:
return nullptr;
case WindowType::Menu:
return s_menu_shadow;
case WindowType::Tooltip:
return s_tooltip_shadow;
case WindowType::Taskbar:
return s_taskbar_shadow;
case WindowType::AppletArea:
return nullptr;
default:
if (auto* highlight_window = WindowManager::the().highlight_window())
return highlight_window == &m_window ? s_active_window_shadow : s_inactive_window_shadow;
return m_window.is_active() ? s_active_window_shadow : s_inactive_window_shadow;
}
}
bool WindowFrame::has_shadow() const
{
if (auto* shadow_bitmap = this->shadow_bitmap(); shadow_bitmap && shadow_bitmap->format() == Gfx::BitmapFormat::BGRA8888)
return true;
return false;
}
void WindowFrame::did_set_maximized(Badge<Window>, bool maximized)
{
VERIFY(m_maximize_button);
m_maximize_button->set_icon(maximized ? *s_restore_icon : *s_maximize_icon);
}
Gfx::IntRect WindowFrame::menubar_rect() const
{
if (!m_window.menubar() || !m_window.should_show_menubar())
return {};
return Gfx::WindowTheme::current().menubar_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette(), menu_row_count());
}
Gfx::IntRect WindowFrame::titlebar_rect() const
{
return Gfx::WindowTheme::current().titlebar_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::IntRect WindowFrame::titlebar_icon_rect() const
{
return Gfx::WindowTheme::current().titlebar_icon_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::IntRect WindowFrame::titlebar_text_rect() const
{
return Gfx::WindowTheme::current().titlebar_text_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::WindowTheme::WindowState WindowFrame::window_state_for_theme() const
{
auto& wm = WindowManager::the();
if (m_flash_timer && m_flash_timer->is_active())
return m_flash_counter & 1 ? Gfx::WindowTheme::WindowState::Active : Gfx::WindowTheme::WindowState::Inactive;
if (&m_window == wm.highlight_window())
return Gfx::WindowTheme::WindowState::Highlighted;
if (&m_window == wm.m_move_window)
return Gfx::WindowTheme::WindowState::Moving;
if (wm.is_active_window_or_accessory(m_window))
return Gfx::WindowTheme::WindowState::Active;
return Gfx::WindowTheme::WindowState::Inactive;
}
void WindowFrame::paint_notification_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
Gfx::WindowTheme::current().paint_notification_frame(painter, m_window.rect(), palette, m_buttons.last().relative_rect());
}
void WindowFrame::paint_tool_window_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
auto leftmost_button_rect = m_buttons.is_empty() ? Gfx::IntRect() : m_buttons.last().relative_rect();
Gfx::WindowTheme::current().paint_tool_window_frame(painter, window_state_for_theme(), m_window.rect(), m_window.computed_title(), palette, leftmost_button_rect);
}
void WindowFrame::paint_menubar(Gfx::Painter& painter)
{
auto& wm = WindowManager::the();
auto& font = wm.font();
auto palette = wm.palette();
auto menubar_rect = this->menubar_rect();
painter.fill_rect(menubar_rect, palette.window());
Gfx::PainterStateSaver saver(painter);
painter.add_clip_rect(menubar_rect);
painter.translate(menubar_rect.location());
m_window.menubar()->for_each_menu([&](Menu& menu) {
auto text_rect = menu.rect_in_window_menubar();
Color text_color = palette.window_text();
auto is_open = menu.is_open();
if (is_open)
text_rect.translate_by(1, 1);
bool paint_as_pressed = is_open;
bool paint_as_hovered = !paint_as_pressed && &menu == MenuManager::the().hovered_menu();
if (paint_as_pressed || paint_as_hovered) {
Gfx::StylePainter::paint_button(painter, menu.rect_in_window_menubar(), palette, Gfx::ButtonStyle::Coolbar, paint_as_pressed, paint_as_hovered);
}
painter.draw_ui_text(text_rect, menu.name(), font, Gfx::TextAlignment::Center, text_color);
return IterationDecision::Continue;
});
}
void WindowFrame::paint_normal_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
auto leftmost_button_rect = m_buttons.is_empty() ? Gfx::IntRect() : m_buttons.last().relative_rect();
Gfx::WindowTheme::current().paint_normal_frame(painter, window_state_for_theme(), m_window.rect(), m_window.computed_title(), m_window.icon(), palette, leftmost_button_rect, menu_row_count(), m_window.is_modified());
if (m_window.menubar() && m_window.should_show_menubar())
paint_menubar(painter);
}
void WindowFrame::paint(Screen& screen, Gfx::Painter& painter, const Gfx::IntRect& rect)
{
if (auto* cached = render_to_cache(screen))
cached->paint(*this, painter, rect);
}
void WindowFrame::PerScaleRenderedCache::paint(WindowFrame& frame, Gfx::Painter& painter, const Gfx::IntRect& rect)
{
auto frame_rect = frame.unconstrained_render_rect();
auto window_rect = frame.window().rect();
if (m_top_bottom) {
auto top_bottom_height = frame_rect.height() - window_rect.height();
if (m_bottom_y > 0) {
// We have a top piece
auto src_rect = rect.intersected({ frame_rect.location(), { frame_rect.width(), m_bottom_y } });
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_top_bottom, src_rect.translated(-frame_rect.location()), frame.opacity());
}
if (m_bottom_y < top_bottom_height) {
// We have a bottom piece
Gfx::IntRect rect_in_frame { frame_rect.x(), window_rect.bottom() + 1, frame_rect.width(), top_bottom_height - m_bottom_y };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_top_bottom, src_rect.translated(-rect_in_frame.x(), -rect_in_frame.y() + m_bottom_y), frame.opacity());
}
}
if (m_left_right) {
auto left_right_width = frame_rect.width() - window_rect.width();
if (m_right_x > 0) {
// We have a left piece
Gfx::IntRect rect_in_frame { frame_rect.x(), window_rect.y(), m_right_x, window_rect.height() };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_left_right, src_rect.translated(-rect_in_frame.location()), frame.opacity());
}
if (m_right_x < left_right_width) {
// We have a right piece
Gfx::IntRect rect_in_frame { window_rect.right() + 1, window_rect.y(), left_right_width - m_right_x, window_rect.height() };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_left_right, src_rect.translated(-rect_in_frame.x() + m_right_x, -rect_in_frame.y()), frame.opacity());
}
}
}
void WindowFrame::render(Screen& screen, Gfx::Painter& painter)
{
if (m_window.is_frameless())
return;
if (m_window.type() == WindowType::Notification)
paint_notification_frame(painter);
else if (m_window.type() == WindowType::Normal)
paint_normal_frame(painter);
else if (m_window.type() == WindowType::ToolWindow)
paint_tool_window_frame(painter);
else
return;
for (auto& button : m_buttons)
button.paint(screen, painter);
}
void WindowFrame::theme_changed()
{
m_rendered_cache = {};
layout_buttons();
set_button_icons();
m_has_alpha_channel = Gfx::WindowTheme::current().frame_uses_alpha(window_state_for_theme(), WindowManager::the().palette());
}
auto WindowFrame::render_to_cache(Screen& screen) -> PerScaleRenderedCache*
{
auto scale = screen.scale_factor();
PerScaleRenderedCache* rendered_cache;
auto cached_it = m_rendered_cache.find(scale);
if (cached_it == m_rendered_cache.end()) {
auto new_rendered_cache = make<PerScaleRenderedCache>();
rendered_cache = new_rendered_cache.ptr();
m_rendered_cache.set(scale, move(new_rendered_cache));
} else {
rendered_cache = cached_it->value.ptr();
}
rendered_cache->render(*this, screen);
return rendered_cache;
}
void WindowFrame::PerScaleRenderedCache::render(WindowFrame& frame, Screen& screen)
{
if (!m_dirty)
return;
m_dirty = false;
auto scale = screen.scale_factor();
auto frame_rect = frame.rect();
auto frame_rect_including_shadow = frame_rect;
auto* shadow_bitmap = frame.shadow_bitmap();
Gfx::IntPoint shadow_offset;
if (shadow_bitmap) {
auto total_shadow_size = shadow_bitmap->bitmap(screen.scale_factor()).height();
frame_rect_including_shadow.inflate(total_shadow_size, total_shadow_size);
auto offset = total_shadow_size / 2;
shadow_offset = { offset, offset };
}
auto window_rect = frame.window().rect();
// TODO: if we stop using a scaling factor we should clear cached bitmaps from this map
static HashMap<int, RefPtr<Gfx::Bitmap>> s_tmp_bitmap_cache;
Gfx::Bitmap* tmp_bitmap;
{
auto tmp_it = s_tmp_bitmap_cache.find(scale);
if (tmp_it == s_tmp_bitmap_cache.end() || !tmp_it->value->size().contains(frame_rect_including_shadow.size())) {
// Explicitly clear the old bitmap first so this works on machines with very little memory
if (tmp_it != s_tmp_bitmap_cache.end())
tmp_it->value = nullptr;
auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, frame_rect_including_shadow.size(), scale);
if (!bitmap) {
s_tmp_bitmap_cache.remove(scale);
dbgln("Could not create bitmap of size {}", frame_rect_including_shadow.size());
return;
}
tmp_bitmap = bitmap.ptr();
if (tmp_it != s_tmp_bitmap_cache.end())
tmp_it->value = bitmap.release_nonnull();
else
s_tmp_bitmap_cache.set(scale, bitmap.release_nonnull());
} else {
tmp_bitmap = tmp_it->value.ptr();
}
}
VERIFY(tmp_bitmap);
auto top_bottom_height = frame_rect_including_shadow.height() - window_rect.height();
auto left_right_width = frame_rect_including_shadow.width() - window_rect.width();
if (!m_top_bottom || m_top_bottom->width() != frame_rect_including_shadow.width() || m_top_bottom->height() != top_bottom_height || m_top_bottom->scale() != scale) {
if (top_bottom_height > 0)
m_top_bottom = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { frame_rect_including_shadow.width(), top_bottom_height }, scale);
else
m_top_bottom = nullptr;
m_shadow_dirty = true;
}
if (!m_left_right || m_left_right->height() != frame_rect_including_shadow.height() || m_left_right->width() != left_right_width || m_left_right->scale() != scale) {
if (left_right_width > 0)
m_left_right = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { left_right_width, frame_rect_including_shadow.height() }, scale);
else
m_left_right = nullptr;
m_shadow_dirty = true;
}
auto& frame_rect_to_update = m_shadow_dirty ? frame_rect_including_shadow : frame_rect;
Gfx::IntPoint update_location(m_shadow_dirty ? Gfx::IntPoint { 0, 0 } : shadow_offset);
Gfx::Painter painter(*tmp_bitmap);
// Clear the frame area, not including the window content area, which we don't care about
for (auto& rect : frame_rect_to_update.shatter(window_rect))
painter.clear_rect({ rect.location() - frame_rect_to_update.location(), rect.size() }, { 255, 255, 255, 0 });
if (m_shadow_dirty && shadow_bitmap)
frame.paint_simple_rect_shadow(painter, { { 0, 0 }, frame_rect_including_shadow.size() }, shadow_bitmap->bitmap(screen.scale_factor()));
{
Gfx::PainterStateSaver save(painter);
painter.translate(shadow_offset);
frame.render(screen, painter);
}
if (m_top_bottom && top_bottom_height > 0) {
m_bottom_y = window_rect.y() - frame_rect_including_shadow.y();
VERIFY(m_bottom_y >= 0);
Gfx::Painter top_bottom_painter(*m_top_bottom);
top_bottom_painter.add_clip_rect({ update_location, { frame_rect_to_update.width(), top_bottom_height - update_location.y() - (frame_rect_including_shadow.bottom() - frame_rect_to_update.bottom()) } });
if (m_bottom_y > 0)
top_bottom_painter.blit({ 0, 0 }, *tmp_bitmap, { 0, 0, frame_rect_including_shadow.width(), m_bottom_y }, 1.0, false);
if (m_bottom_y < top_bottom_height)
top_bottom_painter.blit({ 0, m_bottom_y }, *tmp_bitmap, { 0, frame_rect_including_shadow.height() - (frame_rect_including_shadow.bottom() - window_rect.bottom()), frame_rect_including_shadow.width(), top_bottom_height - m_bottom_y }, 1.0, false);
} else {
m_bottom_y = 0;
}
if (left_right_width > 0) {
m_right_x = window_rect.x() - frame_rect_including_shadow.x();
VERIFY(m_right_x >= 0);
Gfx::Painter left_right_painter(*m_left_right);
left_right_painter.add_clip_rect({ update_location, { left_right_width - update_location.x() - (frame_rect_including_shadow.right() - frame_rect_to_update.right()), window_rect.height() } });
if (m_right_x > 0)
left_right_painter.blit({ 0, 0 }, *tmp_bitmap, { 0, m_bottom_y, m_right_x, window_rect.height() }, 1.0, false);
if (m_right_x < left_right_width)
left_right_painter.blit({ m_right_x, 0 }, *tmp_bitmap, { (window_rect.right() - frame_rect_including_shadow.x()) + 1, m_bottom_y, frame_rect_including_shadow.width() - (frame_rect_including_shadow.right() - window_rect.right()), window_rect.height() }, 1.0, false);
} else {
m_right_x = 0;
}
m_shadow_dirty = false;
}
void WindowFrame::set_opacity(float opacity)
{
if (m_opacity == opacity)
return;
bool was_opaque = is_opaque();
m_opacity = opacity;
if (was_opaque != is_opaque())
Compositor::the().invalidate_occlusions();
Compositor::the().invalidate_screen(render_rect());
WindowManager::the().notify_opacity_changed(m_window);
}
Gfx::IntRect WindowFrame::inflated_for_shadow(const Gfx::IntRect& frame_rect) const
{
if (auto* shadow = shadow_bitmap()) {
auto total_shadow_size = shadow->default_bitmap().height();
return frame_rect.inflated(total_shadow_size, total_shadow_size);
}
return frame_rect;
}
Gfx::IntRect WindowFrame::rect() const
{
return frame_rect_for_window(m_window, m_window.rect());
}
Gfx::IntRect WindowFrame::constrained_render_rect_to_screen(const Gfx::IntRect& render_rect) const
{
if (m_window.is_maximized() || m_window.tiled() != WindowTileType::None)
return render_rect.intersected(Screen::closest_to_rect(rect()).rect());
return render_rect;
}
Gfx::IntRect WindowFrame::render_rect() const
{
return constrained_render_rect_to_screen(inflated_for_shadow(rect()));
}
Gfx::IntRect WindowFrame::unconstrained_render_rect() const
{
return inflated_for_shadow(rect());
}
Gfx::DisjointRectSet WindowFrame::opaque_render_rects() const
{
if (has_alpha_channel()) {
if (m_window.is_opaque())
return constrained_render_rect_to_screen(m_window.rect());
return {};
}
if (m_window.is_opaque())
return constrained_render_rect_to_screen(rect());
Gfx::DisjointRectSet opaque_rects;
opaque_rects.add_many(constrained_render_rect_to_screen(rect()).shatter(m_window.rect()));
return opaque_rects;
}
Gfx::DisjointRectSet WindowFrame::transparent_render_rects() const
{
if (has_alpha_channel()) {
if (m_window.is_opaque()) {
Gfx::DisjointRectSet transparent_rects;
transparent_rects.add_many(render_rect().shatter(m_window.rect()));
return transparent_rects;
}
return render_rect();
}
auto total_render_rect = render_rect();
Gfx::DisjointRectSet transparent_rects;
if (has_shadow())
transparent_rects.add_many(total_render_rect.shatter(rect()));
if (!m_window.is_opaque())
transparent_rects.add(m_window.rect().intersected(total_render_rect));
return transparent_rects;
}
void WindowFrame::invalidate_titlebar()
{
set_dirty();
invalidate(titlebar_rect());
}
void WindowFrame::invalidate()
{
auto frame_rect = render_rect();
invalidate(Gfx::IntRect { frame_rect.location() - m_window.position(), frame_rect.size() });
m_window.invalidate(true, true);
}
void WindowFrame::invalidate_menubar()
{
invalidate(menubar_rect());
}
void WindowFrame::invalidate(Gfx::IntRect relative_rect)
{
auto frame_rect = rect();
auto window_rect = m_window.rect();
relative_rect.translate_by(frame_rect.x() - window_rect.x(), frame_rect.y() - window_rect.y());
set_dirty();
m_window.invalidate(relative_rect);
}
void WindowFrame::window_rect_changed(const Gfx::IntRect& old_rect, const Gfx::IntRect& new_rect)
{
layout_buttons();
set_dirty(true);
WindowManager::the().notify_rect_changed(m_window, old_rect, new_rect);
}
void WindowFrame::layout_buttons()
{
auto button_rects = Gfx::WindowTheme::current().layout_buttons(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette(), m_buttons.size());
for (size_t i = 0; i < m_buttons.size(); i++)
m_buttons[i].set_relative_rect(button_rects[i]);
}
Optional<HitTestResult> WindowFrame::hit_test(Gfx::IntPoint const& position)
{
if (m_window.is_frameless() || m_window.is_fullscreen())
return {};
if (!constrained_render_rect_to_screen(rect()).contains(position)) {
// Checking just frame_rect is not enough. If we constrain rendering
// a window to one screen (e.g. when it's maximized or tiled) so that
// the frame doesn't bleed into the adjacent screen(s), then we need
// to also check that we're within these bounds.
return {};
}
auto window_rect = m_window.rect();
if (window_rect.contains(position))
return {};
auto* screen = Screen::find_by_location(position);
if (!screen)
return {};
auto* cached = render_to_cache(*screen);
if (!cached)
return {};
auto window_relative_position = position.translated(-unconstrained_render_rect().location());
return cached->hit_test(*this, position, window_relative_position);
}
Optional<HitTestResult> WindowFrame::PerScaleRenderedCache::hit_test(WindowFrame& frame, Gfx::IntPoint const& position, Gfx::IntPoint const& window_relative_position)
{
HitTestResult result {
.window = frame.window(),
.screen_position = position,
.window_relative_position = window_relative_position,
.is_frame_hit = true,
};
u8 alpha_threshold = Gfx::WindowTheme::current().frame_alpha_hit_threshold(frame.window_state_for_theme()) * 255;
if (alpha_threshold == 0)
return result;
u8 alpha = 0xff;
auto window_rect = frame.window().rect();
if (position.y() < window_rect.y()) {
if (m_top_bottom) {
auto scaled_relative_point = window_relative_position * m_top_bottom->scale();
if (m_top_bottom->rect().contains(scaled_relative_point))
alpha = m_top_bottom->get_pixel(scaled_relative_point).alpha();
}
} else if (position.y() > window_rect.bottom()) {
if (m_top_bottom) {
Gfx::IntPoint scaled_relative_point { window_relative_position.x() * m_top_bottom->scale(), m_bottom_y * m_top_bottom->scale() + position.y() - window_rect.bottom() - 1 };
if (m_top_bottom->rect().contains(scaled_relative_point))
alpha = m_top_bottom->get_pixel(scaled_relative_point).alpha();
}
} else if (position.x() < window_rect.x()) {
if (m_left_right) {
Gfx::IntPoint scaled_relative_point { window_relative_position.x() * m_left_right->scale(), (window_relative_position.y() - m_bottom_y) * m_left_right->scale() };
if (m_left_right->rect().contains(scaled_relative_point))
alpha = m_left_right->get_pixel(scaled_relative_point).alpha();
}
} else if (position.x() > window_rect.right()) {
if (m_left_right) {
Gfx::IntPoint scaled_relative_point { m_right_x * m_left_right->scale() + position.x() - window_rect.right() - 1, (window_relative_position.y() - m_bottom_y) * m_left_right->scale() };
if (m_left_right->rect().contains(scaled_relative_point))
alpha = m_left_right->get_pixel(scaled_relative_point).alpha();
}
} else {
return {};
}
if (alpha >= alpha_threshold)
return result;
return {};
}
bool WindowFrame::handle_titlebar_icon_mouse_event(MouseEvent const& event)
{
auto& wm = WindowManager::the();
if (event.type() == Event::MouseDown && (event.button() == MouseButton::Left || event.button() == MouseButton::Right)) {
// Manually start a potential double click. Since we're opening
// a menu, we will only receive the MouseDown event, so we
// need to record that fact. If the user subsequently clicks
// on the same area, the menu will get closed, and we will
// receive a MouseUp event, but because windows have changed
// we don't get a MouseDoubleClick event. We can however record
// this click, and when we receive the MouseUp event check if
// it would have been considered a double click, if it weren't
// for the fact that we opened and closed a window in the meanwhile
wm.start_menu_doubleclick(m_window, event);
m_window.popup_window_menu(titlebar_rect().bottom_left().translated(rect().location()), WindowMenuDefaultAction::Close);
return true;
} else if (event.type() == Event::MouseUp && event.button() == MouseButton::Left) {
// Since the MouseDown event opened a menu, another MouseUp
// from the second click outside the menu wouldn't be considered
// a double click, so let's manually check if it would otherwise
// have been be considered to be one
if (wm.is_menu_doubleclick(m_window, event)) {
// It is a double click, so perform activate the default item
m_window.window_menu_activate_default();
}
return true;
}
return false;
}
void WindowFrame::handle_titlebar_mouse_event(MouseEvent const& event)
{
auto& wm = WindowManager::the();
if (titlebar_icon_rect().contains(event.position())) {
if (handle_titlebar_icon_mouse_event(event))
return;
}
for (auto& button : m_buttons) {
if (button.relative_rect().contains(event.position()))
return button.on_mouse_event(event.translated(-button.relative_rect().location()));
}
if (event.type() == Event::MouseDown) {
if ((m_window.type() == WindowType::Normal || m_window.type() == WindowType::ToolWindow) && event.button() == MouseButton::Right) {
auto default_action = m_window.is_maximized() ? WindowMenuDefaultAction::Restore : WindowMenuDefaultAction::Maximize;
m_window.popup_window_menu(event.position().translated(rect().location()), default_action);
return;
}
if (m_window.is_movable() && event.button() == MouseButton::Left)
wm.start_window_move(m_window, event.translated(rect().location()));
}
}
void WindowFrame::handle_mouse_event(MouseEvent const& event)
{
VERIFY(!m_window.is_fullscreen());
if (m_window.type() != WindowType::Normal && m_window.type() != WindowType::ToolWindow && m_window.type() != WindowType::Notification)
return;
auto& wm = WindowManager::the();
if (m_window.type() == WindowType::Normal || m_window.type() == WindowType::ToolWindow) {
if (event.type() == Event::MouseDown)
wm.move_to_front_and_make_active(m_window);
}
if (m_window.blocking_modal_window())
return;
// This is slightly hackish, but expand the title bar rect by two pixels downwards,
// so that mouse events between the title bar and window contents don't act like
// mouse events on the border.
auto adjusted_titlebar_rect = titlebar_rect();
adjusted_titlebar_rect.set_height(adjusted_titlebar_rect.height() + 2);
if (adjusted_titlebar_rect.contains(event.position())) {
handle_titlebar_mouse_event(event);
return;
}
if (menubar_rect().contains(event.position())) {
handle_menubar_mouse_event(event);
return;
}
handle_border_mouse_event(event);
}
void WindowFrame::handle_border_mouse_event(const MouseEvent& event)
{
if (!m_window.is_resizable())
return;
auto& wm = WindowManager::the();
if (event.type() == Event::MouseMove && event.buttons() == 0) {
constexpr ResizeDirection direction_for_hot_area[3][3] = {
{ ResizeDirection::UpLeft, ResizeDirection::Up, ResizeDirection::UpRight },
{ ResizeDirection::Left, ResizeDirection::None, ResizeDirection::Right },
{ ResizeDirection::DownLeft, ResizeDirection::Down, ResizeDirection::DownRight },
};
Gfx::IntRect outer_rect = { {}, rect().size() };
VERIFY(outer_rect.contains(event.position()));
int window_relative_x = event.x() - outer_rect.x();
int window_relative_y = event.y() - outer_rect.y();
int hot_area_row = min(2, window_relative_y / (outer_rect.height() / 3));
int hot_area_column = min(2, window_relative_x / (outer_rect.width() / 3));
wm.set_resize_candidate(m_window, direction_for_hot_area[hot_area_row][hot_area_column]);
Compositor::the().invalidate_cursor();
return;
}
if (event.type() == Event::MouseDown && event.button() == MouseButton::Left)
wm.start_window_resize(m_window, event.translated(rect().location()));
}
void WindowFrame::handle_menubar_mouse_event(const MouseEvent& event)
{
Menu* hovered_menu = nullptr;
auto menubar_rect = this->menubar_rect();
auto adjusted_position = event.position().translated(-menubar_rect.location());
m_window.menubar()->for_each_menu([&](Menu& menu) {
if (menu.rect_in_window_menubar().contains(adjusted_position)) {
hovered_menu = &menu;
handle_menu_mouse_event(menu, event);
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
if (!hovered_menu && event.type() == Event::Type::MouseDown)
MenuManager::the().close_everyone();
if (hovered_menu != MenuManager::the().hovered_menu()) {
MenuManager::the().set_hovered_menu(hovered_menu);
invalidate(menubar_rect);
}
}
void WindowFrame::open_menubar_menu(Menu& menu)
{
auto menubar_rect = this->menubar_rect();
MenuManager::the().close_everyone();
menu.ensure_menu_window(menu.rect_in_window_menubar().bottom_left().translated(rect().location()).translated(menubar_rect.location()));
MenuManager::the().open_menu(menu);
WindowManager::the().set_window_with_active_menu(&m_window);
invalidate(menubar_rect);
}
void WindowFrame::handle_menu_mouse_event(Menu& menu, const MouseEvent& event)
{
auto menubar_rect = this->menubar_rect();
bool is_hover_with_any_menu_open = event.type() == MouseEvent::MouseMove && &m_window == WindowManager::the().window_with_active_menu();
bool is_mousedown_with_left_button = event.type() == MouseEvent::MouseDown && event.button() == MouseButton::Left;
bool should_open_menu = &menu != MenuManager::the().current_menu() && (is_hover_with_any_menu_open || is_mousedown_with_left_button);
bool should_close_menu = &menu == MenuManager::the().current_menu() && is_mousedown_with_left_button;
if (should_open_menu) {
open_menubar_menu(menu);
return;
}
if (should_close_menu) {
invalidate(menubar_rect);
MenuManager::the().close_everyone();
}
}
void WindowFrame::start_flash_animation()
{
if (!m_flash_timer) {
m_flash_timer = Core::Timer::construct(100, [this] {
VERIFY(m_flash_counter);
invalidate_titlebar();
if (!--m_flash_counter)
m_flash_timer->stop();
});
}
m_flash_counter = 8;
m_flash_timer->start();
}
void WindowFrame::paint_simple_rect_shadow(Gfx::Painter& painter, const Gfx::IntRect& containing_rect, const Gfx::Bitmap& shadow_bitmap, bool shadow_includes_frame, bool fill_content)
{
// The layout of the shadow_bitmap is defined like this:
// +---------+----+---------+----+----+----+
// | TL | T | TR | LT | L | LB |
// +---------+----+---------+----+----+----+
// | BL | B | BR | RT | R | RB |
// +---------+----+---------+----+----+----+
// Located strictly on the top or bottom of the rectangle, above or below of the content:
// TL = top-left T = top TR = top-right
// BL = bottom-left B = bottom BR = bottom-right
// Located on the left or right of the rectangle, but not above or below of the content:
// LT = left-top L = left LB = left-bottom
// RT = right-top R = right RB = right-bottom
// So, the bitmap has two rows and 6 column, two of which are twice as wide.
// The height divided by two defines a cell size, and width of each
// column must be the same as the height of the cell, except for the
// first an third column, which are twice as wide.
// If fill_content is true, it will use the RGBA color of right-bottom pixel of TL to fill the rectangle enclosed
if (shadow_bitmap.height() % 2 != 0) {
dbgln("Can't paint simple rect shadow, shadow bitmap height {} is not even", shadow_bitmap.height());
return;
}
auto base_size = shadow_bitmap.height() / 2;
if (shadow_bitmap.width() != base_size * (6 + 2)) {
if (shadow_bitmap.width() % base_size != 0)
dbgln("Can't paint simple rect shadow, shadow bitmap width {} is not a multiple of {}", shadow_bitmap.width(), base_size);
else
dbgln("Can't paint simple rect shadow, shadow bitmap width {} but expected {}", shadow_bitmap.width(), base_size * (6 + 2));
return;
}
// The containing_rect should have been inflated appropriately
VERIFY(containing_rect.size().contains(Gfx::IntSize { base_size, base_size }));
auto sides_height = containing_rect.height() - 2 * base_size;
auto half_height = sides_height / 2;
auto containing_horizontal_rect = containing_rect;
int horizontal_shift = 0;
if (half_height < base_size && !shadow_includes_frame) {
// If the height is too small we need to shift the left/right accordingly, unless the shadow includes portions of the frame
horizontal_shift = base_size - half_height;
containing_horizontal_rect.set_left(containing_horizontal_rect.left() + horizontal_shift);
containing_horizontal_rect.set_right(containing_horizontal_rect.right() - 2 * horizontal_shift);
}
auto half_width = containing_horizontal_rect.width() / 2;
int corner_piece_width = min(containing_horizontal_rect.width() / 2, base_size * 2);
int left_corners_right = containing_horizontal_rect.left() + corner_piece_width;
int right_corners_left = max(containing_horizontal_rect.right() - corner_piece_width + 1, left_corners_right + 1);
auto paint_horizontal = [&](int y, int src_row) {
if (half_width <= 0)
return;
Gfx::PainterStateSaver save(painter);
painter.add_clip_rect({ containing_horizontal_rect.left(), y, containing_horizontal_rect.width(), base_size });
painter.blit({ containing_horizontal_rect.left(), y }, shadow_bitmap, { 0, src_row * base_size, corner_piece_width, base_size });
painter.blit({ right_corners_left, y }, shadow_bitmap, { 5 * base_size - corner_piece_width, src_row * base_size, corner_piece_width, base_size });
for (int x = left_corners_right; x < right_corners_left; x += base_size) {
auto width = min(right_corners_left - x, base_size);
painter.blit({ x, y }, shadow_bitmap, { corner_piece_width, src_row * base_size, width, base_size });
}
};
paint_horizontal(containing_rect.top(), 0);
paint_horizontal(containing_rect.bottom() - base_size + 1, 1);
int corner_piece_height = min(half_height, base_size);
int top_corners_bottom = base_size + corner_piece_height;
int bottom_corners_top = base_size + max(half_height, sides_height - corner_piece_height);
auto paint_vertical = [&](int x, int src_row, int hshift, int hsrcshift) {
Gfx::PainterStateSaver save(painter);
painter.add_clip_rect({ x, containing_rect.y() + base_size, base_size, containing_rect.height() - 2 * base_size });
painter.blit({ x + hshift, containing_rect.top() + top_corners_bottom - corner_piece_height }, shadow_bitmap, { base_size * 5 + hsrcshift, src_row * base_size, base_size - hsrcshift, corner_piece_height });
painter.blit({ x + hshift, containing_rect.top() + bottom_corners_top }, shadow_bitmap, { base_size * 7 + hsrcshift, src_row * base_size + base_size - corner_piece_height, base_size - hsrcshift, corner_piece_height });
for (int y = top_corners_bottom; y < bottom_corners_top; y += base_size) {
auto height = min(bottom_corners_top - y, base_size);
painter.blit({ x, containing_rect.top() + y }, shadow_bitmap, { base_size * 6, src_row * base_size, base_size, height });
}
};
paint_vertical(containing_rect.left(), 0, horizontal_shift, 0);
if (shadow_includes_frame)
horizontal_shift = 0; // TODO: fix off-by-one on rectangles barely wide enough
paint_vertical(containing_rect.right() - base_size + 1, 1, 0, horizontal_shift);
if (fill_content) {
// Fill the enclosed rectangle with the RGBA color of the right-bottom pixel of the TL tile
auto inner_rect = containing_rect.shrunken(2 * base_size, 2 * base_size);
if (!inner_rect.is_empty())
painter.fill_rect(inner_rect, shadow_bitmap.get_pixel(2 * base_size - 1, base_size - 1));
}
}
int WindowFrame::menu_row_count() const
{
if (!m_window.should_show_menubar())
return 0;
return m_window.menubar() ? 1 : 0;
}
}
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